An intervertebral prosthetic disc is disclosed and can be installed within an intervertebral space between a superior vertebra and an inferior vertebra. The intervertebral prosthetic disc can include an inferior component that can have a depression formed therein and a superior component that can have a projection extending therefrom. The projection can be configured to movably engage the depression and allow relative motion between the inferior component and the superior component. Further, the projection can include a superior wear resistant layer that can have a cross-linked polymer and can be configured to engage the depression.